Which option distinguishes why the children in the following scenario are still likely over their recommended daily sugar intake?

Claire is trying to limit her children’s sugar intake, so she buys a new cereal that claims to have the lowest amount of sugar among similar products.

The product doesn’t include sugars from carbohydrates.
The product has smaller serving sizes than the others.
The product actually has sugar added as noted on the label.
The product has artificial sweeteners instead.